I'm struggling trying to get radiant-0.6.1 installed in a subdirectory. My 
current approach is to use an Apache proxy.

I note there are threads starting:

http://lists.radiantcms.org/pipermail/radiant/2006-September/002022.html
http://lists.radiantcms.org/pipermail/radiant/2006-September/001929.html
http://lists.radiantcms.org/pipermail/radiant/2006-November/002405.html

which indicate some other ways this might be done.

For the moment I'm trying the approach suggested in:

http://lists.radiantcms.org/pipermail/radiant/2007-January/002932.html

which is fairly clean --- but I've found doesn't quiet work when browsing to 
/admin. I start radiant via either mongrel or webrick, and have it listen on 
127.0.0.1:3000.

The problem is that when Apache forwards the request using proxypass, it 
includes the following in the HTML:

----------------------
HTTP_X_FORWARDED_HOST: foo
HTTP_USER_AGENT: Wget/1.10.2 (Red Hat  modified)
SCRIPT_NAME: /
SERVER_PROTOCOL: HTTP/1.1
HTTP_HOST: 127.0.0.1:3000
----------------------

This triggers code in 
/radiant-0.6.1/vendor/rails/actionpack/lib/action_controller/cgi_process.rb to
prefer the host named in HTTP_X_FORWARDED_HOST

So if I go http://localhost/radiant/admin, I get a 302 redirect that reads:

  HTTP/1.1 302 Moved Temporarily
  Date: Thu, 31 May 2007 20:13:11 GMT
  Server: Mongrel 1.0.1
  Status: 302 Found
  Location: http://foo/admin/pages

Where the new location has used HTTP_X_FORWARDED_HOST instead of HTTP_HOST.

I can't quite figure out what the real problem is.

o Is Apache wrong in including HTTP_X_FORWARDED_HOST ?
  I think that's pretty standard fare, and I can't see a reason for Apache not
  to include that.

o Should radiant ignore HTTP_X_FORWARDED_HOST ?
  Given John Long's comment in  
http://lists.radiantcms.org/pipermail/radiant/2006-September/002024.html
  I suspect this might be the right course of action.

o Is the code in action_controller/cgi_process.rb wrong in all cases?
   I'm wondering if using HTTP_X_FORWARDED_HOST can ever be the
   right course of action for CGI scripts?


       
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